public void Render(RenderArgs arg)
{
if (_locIcons == null || _locIcons.Count == 0)
{
return;
}
if (_img == null)
{
CreateBackgroudImage();
}
using (Font font = new Font("微软雅黑", 9))
{
ICoordinateTransform tran = (_mapRuntime as IFeatureRenderEnvironment).CoordinateTransform;
foreach (LocationIcon icon in _locIcons)
{
if (icon == null || string.IsNullOrEmpty(icon.Text) || icon.Feature == null)
{
continue;
}
SizeF fontsize = arg.Graphics.MeasureString(icon.Text, font);
ShapePoint prjpt = GetLocationByFeature(icon.Feature);
PointF[] pts = tran.PrjCoord2PixelCoord(new ShapePoint[] { prjpt });
pts[0].Y -= (_iconSize.Height + 5);
pts[0].X -= _iconSize.Width / 2;
arg.Graphics.DrawImage(_img, pts[0]);
arg.Graphics.DrawString(icon.Text, font, Brushes.Red, pts[0].X + (_iconSize.Width - fontsize.Width) / 2, pts[0].Y - (_iconSize.Height - fontsize.Height) / 2);
}
}
}
